From 1cfe3cf24db29bd9274c2e59587cc0960e9db47c Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Sun, 16 Oct 2011 17:50:55 +0200 Subject: intial import of libnetfilter_acct --- src/libnetfilter_acct.c | 154 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 154 insertions(+) create mode 100644 src/libnetfilter_acct.c (limited to 'src/libnetfilter_acct.c') diff --git a/src/libnetfilter_acct.c b/src/libnetfilter_acct.c new file mode 100644 index 0000000..5311430 --- /dev/null +++ b/src/libnetfilter_acct.c @@ -0,0 +1,154 @@ +/* + * (C) 2011 by Pablo Neira Ayuso + * (C) 2011 by Intra2net AG + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the Lesser GNU General Public License as published + * by the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#include "internal.h" + +#include +#include +#include +#include + +#include + +struct nlmsghdr *nfacct_add(char *buf, struct nfacct *nfacct) +{ + struct nlmsghdr *nlh; + struct nfgenmsg *nfh; + + nlh = mnl_nlmsg_put_header(buf); + nlh->nlmsg_type = (NFNL_SUBSYS_ACCT << 8) | NFNL_MSG_ACCT_NEW; + nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK; + nlh->nlmsg_seq = time(NULL); + + nfh = mnl_nlmsg_put_extra_header(nlh, sizeof(struct nfgenmsg)); + nfh->nfgen_family = AF_UNSPEC; + nfh->version = NFNETLINK_V0; + nfh->res_id = 0; + + mnl_attr_put_strz(nlh, NFACCT_NAME, nfacct->name); + mnl_attr_put_u64(nlh, NFACCT_PKTS, nfacct->pkts); + mnl_attr_put_u64(nlh, NFACCT_PKTS, nfacct->bytes); + + return nlh; +} +EXPORT_SYMBOL(nfacct_add); + +struct nlmsghdr *nfacct_list(char *buf) +{ + struct nlmsghdr *nlh; + struct nfgenmsg *nfh; + + nlh = mnl_nlmsg_put_header(buf); + nlh->nlmsg_type = (NFNL_SUBSYS_ACCT << 8) | NFNL_MSG_ACCT_GET; + nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; + nlh->nlmsg_seq = time(NULL); + + nfh = mnl_nlmsg_put_extra_header(nlh, sizeof(struct nfgenmsg)); + nfh->nfgen_family = AF_UNSPEC; + nfh->version = NFNETLINK_V0; + nfh->res_id = 0; + + return nlh; +} +EXPORT_SYMBOL(nfacct_list); + +static int nfacct_list_attr_cb(const struct nlattr *attr, void *data) +{ + const struct nlattr **tb = data; + int type = mnl_attr_get_type(attr); + + if (mnl_attr_type_valid(attr, NFACCT_MAX) < 0) + return MNL_CB_OK; + + switch(type) { + case NFACCT_NAME: + if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0) { + perror("mnl_attr_validate"); + return MNL_CB_ERROR; + } + break; + case NFACCT_PKTS: + if (mnl_attr_validate(attr, MNL_TYPE_U64) < 0) { + perror("mnl_attr_validate"); + return MNL_CB_ERROR; + } + break; + case NFACCT_BYTES: + if (mnl_attr_validate(attr, MNL_TYPE_U64) < 0) { + perror("mnl_attr_validate"); + return MNL_CB_ERROR; + } + break; + } + tb[type] = attr; + return MNL_CB_OK; +} + +int nfacct_list_cb(const struct nlmsghdr *nlh, void *data) +{ + struct nlattr *tb[NFACCT_MAX+1] = {}; + struct nfgenmsg *nfg = mnl_nlmsg_get_payload(nlh); + bool *full = data; + + mnl_attr_parse(nlh, sizeof(*nfg), nfacct_list_attr_cb, tb); + if (!tb[NFACCT_NAME] && !tb[NFACCT_PKTS] && !tb[NFACCT_BYTES]) + return MNL_CB_OK; + + if (*full) { + printf("%s = { pkts = %.12llu,\tbytes = %.12llu }; \n", + mnl_attr_get_str(tb[NFACCT_NAME]), + mnl_attr_get_u64(tb[NFACCT_PKTS]), + mnl_attr_get_u64(tb[NFACCT_BYTES])); + } else { + printf("%s\n", mnl_attr_get_str(tb[NFACCT_NAME])); + } + + return MNL_CB_OK; +} +EXPORT_SYMBOL(nfacct_list_cb); + +struct nlmsghdr *nfacct_flush(char *buf) +{ + struct nlmsghdr *nlh; + struct nfgenmsg *nfh; + + nlh = mnl_nlmsg_put_header(buf); + nlh->nlmsg_type = (NFNL_SUBSYS_ACCT << 8) | NFNL_MSG_ACCT_DEL; + nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK; + nlh->nlmsg_seq = time(NULL); + + nfh = mnl_nlmsg_put_extra_header(nlh, sizeof(struct nfgenmsg)); + nfh->nfgen_family = AF_UNSPEC; + nfh->version = NFNETLINK_V0; + nfh->res_id = 0; + + return nlh; +} +EXPORT_SYMBOL(nfacct_flush); + +struct nlmsghdr *nfacct_delete(char *buf, const char *filter_name) +{ + struct nlmsghdr *nlh; + struct nfgenmsg *nfh; + + nlh = mnl_nlmsg_put_header(buf); + nlh->nlmsg_type = (NFNL_SUBSYS_ACCT << 8) | NFNL_MSG_ACCT_DEL; + nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK; + nlh->nlmsg_seq = time(NULL); + + nfh = mnl_nlmsg_put_extra_header(nlh, sizeof(struct nfgenmsg)); + nfh->nfgen_family = AF_UNSPEC; + nfh->version = NFNETLINK_V0; + nfh->res_id = 0; + + mnl_attr_put_strz(nlh, NFACCT_NAME, filter_name); + + return nlh; +} +EXPORT_SYMBOL(nfacct_delete); -- cgit v1.2.3